Oil-level indicator for motor-vehicles



C. R. SHORT OIL LEVEL INDICATOR FOR MOTOR VEHICLES.

APPLICATION FILED APR. 6| 19]]. 1,386,903.

Patented Aug. 9, 1921.;

INVENTORZ UNITED," STATES CHARLES R. SHORT, 013 DETROIT,

MICHIGAN, ASSIGNO'R TO GENERAL MOTORS COM- iPANY, 'OF DETROIT, MIGH IGAN', A. CORPORATION NEW OIL-LEVEL mnrcnron. r02, mmaemcm a To'all uikoin it may concern:

Be it known'that I, CHARLES R. SHORT, a

subject of'the of Great Britain, and

resident of Detroit, Waynecounty, State of Michigan, have invented certain new and useful Improvements inOil-Level Indicators for Motor-Vehicles, of which. the following is a specification.

' This invention relates to hydrocarbon moparticularly to liquid level gagesv tors, and therefor.

In the usual construction of a hydrocarbon motor power plant, wherein'the crank case is split horizontally in approximately the median plane of the crank shaft, forming an upper and lower section, it is'usual to have.

an oil gage actuating-mechanism arranged in the lower section of the crank case with an integral or non-detachable indicator stem arranged within the upper section of .the crank case, ata point considerably above where the sections are joined. With such constructions when it'is found desirable to remove the lowersection of the crank case from the upper section; it .is necessary to drop the former until the upper end of the indicator stem has been lowered to or below where the sections meet. This construction frequently results in causing considerable" difiicultyin dis-assembling the lower section of the crank case from the upper, because in many instances facilities do not permit the necessary'clearance for dropping down the lower crankcase section.

To obviate these, and other difiiculties, and to compensate for variations ofmanufacture, which would result in mis-alinement with the ordinary constructions, I have provided a gage actuating an indicator mechanism having portions mounted in each section-of the case and either abutting against" one another while having no other connection,

1 or having detachable connections which facilitate the dis-assembly of-one crank case section from another, without the extreme 'movements necessary for separating these sections in the usual construction:

These, and other objects, will clearly appear from the following descript1 on, taken in connection with the accompanyin drawings, which form a part of this speci cation,

7 and ,in which:

.T gure 1 is a transverse vertical section of a portion of a hydrocarbon motor crank case, embodying a form of my 111V611t1011- Specification of Letters Patent.

7 Patented Aug. 9,1921. Application flied-A r l e, 1917. SerfaINo.160,1 27.

fFig. 2is asectionsimilar 'to Figalf i1lusy tratingonly the upper sectiom of the crank case" Fig. 3 is a det stem; 1

Fig; 4 is an endelevation with a portion broken away of the-crankcase lower section;

ail of the gage indicator and "Fig. 5 is a fragmentary section similar to Fig. 2 of a modified form.-

Referring to the drawings, 10 illustrates the upper half of a motor crank case section in which a crankshaft 11 maybe mounted infsuitable bearings. 'The lower section of float 17 which is adapted to be partially im-" mersed in a lubricant 18 confined in the bottom-of the pan 11 is suitably secured to the or plate the stem.

An indicator "stem 20 is adapted to be slidably mounted in a boss 21 formed in the upper section' 10 of-the crank case. The

'pointer 22, which is formed on the upper end of thls stem-,is located in proximity .80 lower end of the,member 16. A diaphragm 19 is mounted at the upper end of to a recessed portion of the crank case member 10, which is provided with graduations as at 23 in either inches or liquid measure, "so that when the lower end'24 of the stem 20 rests against the upper end .19 of'the float stem 16, the position of the .pointer 22, relative to the level of liquld in the pan 11*,- T

aduation 23,"will indicate the This oil gage construction, permits lateral variations of the relative position of the upper and lower section of the gage, and the oil pan may be dis-assembled from the upper half of the crank case and return'edfto position in a very simple and easy manner.

Referring to Fig. 5, it is to be noted that the upper end of the stem 16 is provided with an interiorly threaded cup 25) and the lower end of the indicator stem .20 is exteriorly threaded for detachably connecting these parts. The boss 15. of the arm 14 may be provided with 'a .pair of sto s 27 which cooperate with the transverse y arranged 16 for preventin rotastem 20, when the latter is threaded to or unthreaded from the former.

'7 While I have described, and. will spe-Y cifically claim, what I deem to be preferred forms of my inventiommit will-be obvious to those skilled in the art, that various modis.

. fications and changes may be made without de rting fromthe spirit and scope hereof.

aving thus described my invention,

' what I claim and desire to Secure by Let-- *tcrs' Patent is:

member.-

, erated mechanism located within the lower.

* part of saidcrank case, and a second mem- 1-. In: combination with a container having two parts detachably securedtogether', a

age device comprising afloatoperated member located within one part of said container and permanently: associated therewith, and an indicating member carried by the other part of said container and abutting against but unconnected with said first mentioned 2. In an internal combustion engine, a crank case having upper and lowensections detachably connected together, and an oil level indicating device comprising float opof saidsections, and an indicating member associated with the upper of said sections;

said float operated mechanism being in operative engagement with and separable.

from said indicating member.

3. In an internal combustion engine having atwo' part crank case, a gage comprising a float actuated member mounted in one permanent connection therewith.

, from the upper,

memos ber mounted in the other part ofsaid crank case and adapted to be operated by said float actuated member and having a ben- 4.- In an internal combustion engine, a crank case having two parts detachably connected, an indicator stem mounted in one part, a float mechanism mounted in the other part, said stem being adapted to merely rest on a movable part of said mechanism and to be actuated thereby. 1

5. In an internal combustion; engine, in combination with a crank case having a iplurality of parts detachably connected,.a oat at mechanism comprisin an actuating stem mounted in one of said parts and an indicator stem mounted in another part, said latter stem being adapted to rest on saidformer stem and to be actuated thereby.

6. In combination in an internal oombus tion engine having a crank case comprising upper and lower sections secured together and the lowerot which. sections is separable provided with "a recess; avertically movable reciprocating rod extending through a guide carried by said upper section-and the upper end of. which moves within said recess; a

float located within the lower of said sect5 tions; and an actuating member carried. by said float and movable therewith and which member is in operative but non-permanent engagement with said rod to" thereby communicate motion thereto. r In testimony. whereof I affix myvsignature. CHARLES It. S-HQR'I.

andv which upper section is co 

